Wall covering



FIG. 1 is a top plan view of a wall covering showing my new design.

The undisclosed rear and sides of the wall covering are plain and unornamented. The drawing further shows only a portion of the wall covering upon which the design, repeated in units bounded by the broken lines, is applied. The broken lines are in no way intended to form a part of the design as shown and are for illustrative purposes only. 

The ornamental design for a wall covering, as shown and described. 